MSNBC doesn't know physics - Earth Empires Forum

EVO|Rasp

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311

Oct 16th 2012, 14:48:07

Felix and Einstein should talk:
https://sphotos-b.xx.fbcdn.net/...93815782_2022800259_n.jpg

And for those of you who love ludicrous speed:
http://www.youtube.com/watch?v=mk7VWcuVOf0

iNouda

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1043

Oct 16th 2012, 17:11:58

FTL ftw!

archaic

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7011

Oct 16th 2012, 17:34:49

So . . . if he was going the speed of light, then his mass was infinite eh, which means that we would have gotten pulled into his orbit - so he wasn't really falling . . . we were.

It did kinda feel that way

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Dibs Ludicrous

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Oct 16th 2012, 17:42:44

wouldn't that would mean that we were doing the speed of light, instead of him doing it? besides, i thought that anything with mass wasn't capable of going the speed of light? if it has infinite mass, would it be able to move at all?

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archaic

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Oct 16th 2012, 18:07:09

well, the reason a massive particle cannot attain the speed of light is because as V->c, m->infinity, so energy used to accelerate the particle suffers from ever diminishing returns and you never get to the speed of light

basically, felix is now a black hole and we dont have to listen to him anymore

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Dibs Ludicrous

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Oct 16th 2012, 18:50:58

eh? so, basically, a particle that has mass, gains mass from the energy being used to accelerate it? kinda like paintballs hitting a window that they can't break, the mess just gets bigger.

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archaic

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Oct 17th 2012, 0:44:29

exactly

/me awards Dibs PhD in physics

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Dissidenticn

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Oct 17th 2012, 3:32:04

ALSO, and here is where it gets awesome, the more mass you have the slower your personal time is. As you approach the speed of light, your personal time slows down while everyone on earth would be as... well as we were. If he travelled at the speed of light, he also travelled into the future!

Dibs Ludicrous

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Oct 17th 2012, 7:48:29

Originally posted by archaic:

exactly

/me awards Dibs PhD in physics

i was kinda hoping for a Nobel prize. that way i'd a been able to pay for the schooling required to get me a PhD. oh well, it's probably more efficient this way, and i won't gain a bunch of mass from people throwing energetic ideas at me in an attempt to get me to move faster. Thanks.

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EVO|Rasp

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Oct 17th 2012, 19:41:42

761.207 mph versus 670,616,629 mph

Fooglmog

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Oct 17th 2012, 21:40:59

At the altitude he broke through it at, the speed of sound is significantly less than that Rasp.

-Fooglmog
Guy with no clue.

Dissident

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2750

Oct 18th 2012, 4:04:12

Because the air is thinner? wouldn't that make the speed of sound faster? I dunno.

MrTan1

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Oct 18th 2012, 4:20:54

I think it was a typo as it should have been "Felix broke the speed of sound" not "speed of light" as free falling from 128,000 feet up wouldn't give you enough momentum to break the speed of light. Speed of sound? Yes, until the forces of gravity kicked in and terminal velocity kicked in.

iScode> thats ok mrford i know when im not welcome!! :(
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Dibs Ludicrous

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Oct 18th 2012, 9:19:16

Originally posted by Dissident:

Because the air is thinner? wouldn't that make the speed of sound faster? I dunno.

i forget, but sound needs a medium to travel thru. the denser the medium, the faster that the sound travels? where are my science books, i don't feel like turning on a computer...

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bertz

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Oct 18th 2012, 9:43:28

Thinner air means slower speed for the sound

EVO|Rasp

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Oct 18th 2012, 18:43:07

^ exactly.

So Felix would have broken the speed of sound when at 1 atmosphere and 20 °C (68 °F).

However, he was 100,000 feet up. Any guesses as to the density of the air, atmospheric pressure, and temperature at 100,000 feet?

EVO|Rasp

Member
311

Oct 18th 2012, 18:43:56

and someone may want to double check the speed of sound at 1 atmosphere, etc.

I was just throwing that in there as an added variable.

Dissident

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Oct 19th 2012, 3:51:33

I was thinking the same thing in regards to sound requiring air as a medium... much like light requires ether. I was wrong.

bertz

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Oct 19th 2012, 4:40:31

Light does not require medium to travel.
Speed of light is constant too.
The direction of travel can be bent though

Magellaan

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533

Oct 19th 2012, 6:07:49

Originally posted by Dibs Ludicrous:

Originally posted by Dissident:

Because the air is thinner? wouldn't that make the speed of sound faster? I dunno.

i forget, but sound needs a medium to travel thru. the denser the medium, the faster that the sound travels? where are my science books, i don't feel like turning on a computer...

yep, speed of sound through water is about 4 times as fast as through air. Through aluminium almost 20 times as fast.

Not MD, fake Magellaan.

Dibs Ludicrous

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6702

Oct 19th 2012, 8:11:40

Originally posted by bertz:

Light does not require medium to travel.
Speed of light is constant too.
The direction of travel can be bent though

i don't know about that. not sure that it counts if you have to bend the universe to make light travel in a curve.

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